Shuttleless loom for weaving fabrics



June 11, 1929. H BY D 1,117,090

SHUTTLELESS LOOM FOR V IEAVING FABRICS Filed March 31, 192'! entor-FUNITED STATES PATENT Patented June 11, 1929.

1,717,090 OF F ICE.

HUGH LINLEY BYRD, OF STOCKPORT, ENGLAND, ASSIGNOR TO DREY, SIMPSON &COMPANY, LIMITED, OF SOUTH REDDISH, NEAR STOGKPORT, ENGLAND.

SHUTTLE-LESS LOOM FOR WEAVING FABRICS.

Application filed March 31, 1927, Serial No.

This invention has reference to looms of the kind known as shuttlelesslooms and in which the weft thread or threads is or are taken from asupply or supplies at one side or both sides of the loom and laid in thewarp sheds by one or more weft inserters adapted to pass through, or bereciprocated into, the warp sheds.

The invention has for its object to provide improved means of presentingthe weft or wefts to the weft-inserter or weft-inserters in such manneras to ensure the weft or wefts being engaged and taken by theweft-inserter or weft-inserters.

A weft-presenting means according to the invention comprises a weftguide or lifter mounted on the slay of the loom and adapted to beintermittently operated through the medium of ratchet, cam or equivalentmechanism and the movements of the slay so as to alternately interposethe weft in the path of the weft-inserter at the proper moment andafterwards carry the weft, or allow it to be carried or moved, clear ofsaid path. The

weft guide or lifter may comprise only a single guiding or liftingmember or it may comprise a plurality of such members adapted to operatein succession.

In the accompanying drawings Fig. 1 is an elevation of a portion of thefront of a loom and Fig. 2 is an elevation looking towards the righthand in Fig. 2 illustrating one embodiment of the invention.

The embodiment of the invention illustrated is particularly suitable ina loom in which the weft threads are inserted alternately from oppositesides of the loom by means of needles arranged one on each side of theloom and which pass into the warp sheds and meet at or about the middleof same and then recede, the arrangement being such that a loop of weftcarried into a shed by one of the needles is at the place of meetingtrans ferred to the other needle which as it recedes completes thelaying of the weft in the shed.

Referring to the drawings, 3 is a shaft rotatably mounted across theslay 4 in bearings 5 and having fixed on it at each side of the loom acam 6 having two cam surfaces 6, 6 The two cams are so fixed on theshaft 3 that the cam surfaces of one alternate with or are at 90relatively to those of the other. At one end the shaft 3 also has fixedon it a ratchet wheel 7 with which is associated a disc 8 looselymounted on the shaft. The

179,919, and in Great Britain April 6, 1926.

disc 8 carries pawls 9 adapted to eo-act with the teeth of the wheel 7and is provided with a slotted arm 10 with which is engaged the free endof a link 11 pivoted at 12 on the frame 13 of the loom.

At each side of the loom the slay has pivoted on it at 14 a lever 15 theshorter arm of which has connected to it one end of a spring 16 anchoredon the slay at 17. The longer arm of the lever 15 carries a bowl 18adapted to co-act with the cam 6, and the extremity of the lever arm hasconnected to it a weft lifter 19 adapted to reciprocate vertically in a.guide 20, and the upper end 20 of which is adapted to engage with theweft 21 as hereinafter described.

During the backward movement of the slay 4 from the beat up positionshown in Fig. 2, the link 11 pulls on the arm 10 of the disc 8 andpartially rotates the latter which through the pawls 9 correspondinglyrotates the cam 6 to disengage the cam surface 6 thereof from the bowl18 in the longer arm of the lever 15. The lever 15 then rocks on itspivot 14 under the influence of the spring 16 to raise the weft-lifter19 which engages below the weft 21 and lifts same, as shown in dottedlines in Fig. 2, into the path of the weft-inserting needle 22 whichpicks up the weft and carries it into the warp shed.

During the subsequent forward or beat-up movement of the slay the disc 8is partly r0- tated on the shaft 3 back to its original position, thepawls 9 over-riding the teeth of the ratchet wheel 7 During the nextbackward movement of the slay the disc 8 is again operated to partlyrotate the shaft 3 and cam 6 to engage the cam surface 6 with the bowl18 which depresses the lever 15 to pull down the weft-lifter 19 so thatthe latter does not lift the weft which is consequently not taken by theweft-inserting needle during such movement of the slay.

It will be apparent that with the two cams at the opposite sides of theloom arranged with their cam surfaces at 90 relatively to each other thetwo wefts will be alternately raised into the paths of the respectiveneedles and carried into the warp sheds. It will also be apparent thatby providing the cams 6 with appropriate numbers of cam surfaces andarranging the cams with such surfaces in suitable relation to eachother, the two Wefts may be moved into the paths of the needles andcarried by same into the Warp sheds simultaneously or in any otherdesired order in-.

stead of alternately, also that by providing more than two earns morethan two wefts may be dealt with. For example, by providing the cam atone side of the loom with four cam surfaces, and that at the other sidewith two cam surfaces, the weft at the first-mentioned side of the loomwill be carried into the path of the corresponding needle and taken intothe warp shed at each pick while the weft at the other side will betaken into only alternate sheds as above described.

WVhat I claim as my invention and desire to secure by Letters Patentis 1. In a shuttleless loom, a guide for presenting a weft thread to aweft inserter, said guide being mounted on the slay of the loom andadapted to be intermittently operated by the movement of the slay tointerpose the weft in the path of the weft inserter at the proper momentand afterwards carry the weft clear of the line of travel of the weftinserter.

2. In a shuttleless loom, means for presentinga weft thread to a weftinserter comprising a guide member, a cam, and ratchet wheel adapted tobe intermittently rotated, said guide being mounted on the slay of theloom and adapted to be operated by movements of the slay to interposethe weft in the path of the weft inserter at the proper moment andafterwards carry the weft clear of the line of travel of said weftinserter.

3. In a shuttleless loom, means for presenting a weft thread to a weftinserter comprising a guide member, a cam and ratchet wheel adapted tobe intermittently rotated, a lever adapted to be operated by said camagainst the action of a spring, said lever being operatively connectedto said guide, said guide being mounted on the slay of the loom andadapted to be operated by movements of the slay to inter-pose the weftin the path of the weft inserter at the proper moment and afterwardscarry the weft clear of the line of travel of said weft inserter.

In witness whereof I have hereunto set my hand.

HUGH LINLEY BYE-D.

